source: arduino-1-6-7/trunk/fuentes/arduino-ide-amd64/hardware/tools/avr/lib/gcc/avr/4.9.2/plugin/include/ansidecl.h @ 4837

Last change on this file since 4837 was 4837, checked in by daduve, 3 years ago

Adding new version

File size: 10.3 KB
Line 
1/* ANSI and traditional C compatability macros
2   Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
3   2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010, 2013
4   Free Software Foundation, Inc.
5   This file is part of the GNU C Library.
6
7This program is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 2 of the License, or
10(at your option) any later version.
11
12This program is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with this program; if not, write to the Free Software
19Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
20
21/* ANSI and traditional C compatibility macros
22
23   ANSI C is assumed if __STDC__ is #defined.
24
25   Macro                ANSI C definition       Traditional C definition
26   -----                ---- - ----------       ----------- - ----------
27   PTR                  `void *'                `char *'
28   const                not defined             `'
29   volatile             not defined             `'
30   signed               not defined             `'
31
32   For ease of writing code which uses GCC extensions but needs to be
33   portable to other compilers, we provide the GCC_VERSION macro that
34   simplifies testing __GNUC__ and __GNUC_MINOR__ together, and various
35   wrappers around __attribute__.  Also, __extension__ will be #defined
36   to nothing if it doesn't work.  See below.  */
37
38#ifndef _ANSIDECL_H
39#define _ANSIDECL_H     1
40
41#ifdef __cplusplus
42extern "C" {
43#endif
44
45/* Every source file includes this file,
46   so they will all get the switch for lint.  */
47/* LINTLIBRARY */
48
49/* Using MACRO(x,y) in cpp #if conditionals does not work with some
50   older preprocessors.  Thus we can't define something like this:
51
52#define HAVE_GCC_VERSION(MAJOR, MINOR) \
53  (__GNUC__ > (MAJOR) || (__GNUC__ == (MAJOR) && __GNUC_MINOR__ >= (MINOR)))
54
55and then test "#if HAVE_GCC_VERSION(2,7)".
56
57So instead we use the macro below and test it against specific values.  */
58
59/* This macro simplifies testing whether we are using gcc, and if it
60   is of a particular minimum version. (Both major & minor numbers are
61   significant.)  This macro will evaluate to 0 if we are not using
62   gcc at all.  */
63#ifndef GCC_VERSION
64#define GCC_VERSION (__GNUC__ * 1000 + __GNUC_MINOR__)
65#endif /* GCC_VERSION */
66
67#if defined (__STDC__) || defined(__cplusplus) || defined (_AIX) || (defined (__mips) && defined (_SYSTYPE_SVR4)) || defined(_WIN32)
68/* All known AIX compilers implement these things (but don't always
69   define __STDC__).  The RISC/OS MIPS compiler defines these things
70   in SVR4 mode, but does not define __STDC__.  */
71/* eraxxon@alumni.rice.edu: The Compaq C++ compiler, unlike many other
72   C++ compilers, does not define __STDC__, though it acts as if this
73   was so. (Verified versions: 5.7, 6.2, 6.3, 6.5) */
74
75#define PTR             void *
76
77#undef const
78#undef volatile
79#undef signed
80
81/* inline requires special treatment; it's in C99, and GCC >=2.7 supports
82   it too, but it's not in C89.  */
83#undef inline
84#if __STDC_VERSION__ >= 199901L || defined(__cplusplus) || (defined(__SUNPRO_C) && defined(__C99FEATURES__))
85/* it's a keyword */
86#else
87# if GCC_VERSION >= 2007
88#  define inline __inline__   /* __inline__ prevents -pedantic warnings */
89# else
90#  define inline  /* nothing */
91# endif
92#endif
93
94#else   /* Not ANSI C.  */
95
96#define PTR             char *
97
98/* some systems define these in header files for non-ansi mode */
99#undef const
100#undef volatile
101#undef signed
102#undef inline
103#define const
104#define volatile
105#define signed
106#define inline
107
108#endif  /* ANSI C.  */
109
110/* Define macros for some gcc attributes.  This permits us to use the
111   macros freely, and know that they will come into play for the
112   version of gcc in which they are supported.  */
113
114#if (GCC_VERSION < 2007)
115# define __attribute__(x)
116#endif
117
118/* Attribute __malloc__ on functions was valid as of gcc 2.96. */
119#ifndef ATTRIBUTE_MALLOC
120# if (GCC_VERSION >= 2096)
121#  define ATTRIBUTE_MALLOC __attribute__ ((__malloc__))
122# else
123#  define ATTRIBUTE_MALLOC
124# endif /* GNUC >= 2.96 */
125#endif /* ATTRIBUTE_MALLOC */
126
127/* Attributes on labels were valid as of gcc 2.93 and g++ 4.5.  For
128   g++ an attribute on a label must be followed by a semicolon.  */
129#ifndef ATTRIBUTE_UNUSED_LABEL
130# ifndef __cplusplus
131#  if GCC_VERSION >= 2093
132#   define ATTRIBUTE_UNUSED_LABEL ATTRIBUTE_UNUSED
133#  else
134#   define ATTRIBUTE_UNUSED_LABEL
135#  endif
136# else
137#  if GCC_VERSION >= 4005
138#   define ATTRIBUTE_UNUSED_LABEL ATTRIBUTE_UNUSED ;
139#  else
140#   define ATTRIBUTE_UNUSED_LABEL
141#  endif
142# endif
143#endif
144
145/* Similarly to ARG_UNUSED below.  Prior to GCC 3.4, the C++ frontend
146   couldn't parse attributes placed after the identifier name, and now
147   the entire compiler is built with C++.  */
148#ifndef ATTRIBUTE_UNUSED
149#if GCC_VERSION >= 3004
150#  define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
151#else
152#define ATTRIBUTE_UNUSED
153#endif
154#endif /* ATTRIBUTE_UNUSED */
155
156/* Before GCC 3.4, the C++ frontend couldn't parse attributes placed after the
157   identifier name.  */
158#if ! defined(__cplusplus) || (GCC_VERSION >= 3004)
159# define ARG_UNUSED(NAME) NAME ATTRIBUTE_UNUSED
160#else /* !__cplusplus || GNUC >= 3.4 */
161# define ARG_UNUSED(NAME) NAME
162#endif /* !__cplusplus || GNUC >= 3.4 */
163
164#ifndef ATTRIBUTE_NORETURN
165#define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
166#endif /* ATTRIBUTE_NORETURN */
167
168/* Attribute `nonnull' was valid as of gcc 3.3.  */
169#ifndef ATTRIBUTE_NONNULL
170# if (GCC_VERSION >= 3003)
171#  define ATTRIBUTE_NONNULL(m) __attribute__ ((__nonnull__ (m)))
172# else
173#  define ATTRIBUTE_NONNULL(m)
174# endif /* GNUC >= 3.3 */
175#endif /* ATTRIBUTE_NONNULL */
176
177/* Attribute `returns_nonnull' was valid as of gcc 4.9.  */
178#ifndef ATTRIBUTE_RETURNS_NONNULL
179# if (GCC_VERSION >= 4009)
180#  define ATTRIBUTE_RETURNS_NONNULL __attribute__ ((__returns_nonnull__))
181# else
182#  define ATTRIBUTE_RETURNS_NONNULL
183# endif /* GNUC >= 4.9 */
184#endif /* ATTRIBUTE_RETURNS_NONNULL */
185
186/* Attribute `pure' was valid as of gcc 3.0.  */
187#ifndef ATTRIBUTE_PURE
188# if (GCC_VERSION >= 3000)
189#  define ATTRIBUTE_PURE __attribute__ ((__pure__))
190# else
191#  define ATTRIBUTE_PURE
192# endif /* GNUC >= 3.0 */
193#endif /* ATTRIBUTE_PURE */
194
195/* Use ATTRIBUTE_PRINTF when the format specifier must not be NULL.
196   This was the case for the `printf' format attribute by itself
197   before GCC 3.3, but as of 3.3 we need to add the `nonnull'
198   attribute to retain this behavior.  */
199#ifndef ATTRIBUTE_PRINTF
200#define ATTRIBUTE_PRINTF(m, n) __attribute__ ((__format__ (__printf__, m, n))) ATTRIBUTE_NONNULL(m)
201#define ATTRIBUTE_PRINTF_1 ATTRIBUTE_PRINTF(1, 2)
202#define ATTRIBUTE_PRINTF_2 ATTRIBUTE_PRINTF(2, 3)
203#define ATTRIBUTE_PRINTF_3 ATTRIBUTE_PRINTF(3, 4)
204#define ATTRIBUTE_PRINTF_4 ATTRIBUTE_PRINTF(4, 5)
205#define ATTRIBUTE_PRINTF_5 ATTRIBUTE_PRINTF(5, 6)
206#endif /* ATTRIBUTE_PRINTF */
207
208/* Use ATTRIBUTE_FPTR_PRINTF when the format attribute is to be set on
209   a function pointer.  Format attributes were allowed on function
210   pointers as of gcc 3.1.  */
211#ifndef ATTRIBUTE_FPTR_PRINTF
212# if (GCC_VERSION >= 3001)
213#  define ATTRIBUTE_FPTR_PRINTF(m, n) ATTRIBUTE_PRINTF(m, n)
214# else
215#  define ATTRIBUTE_FPTR_PRINTF(m, n)
216# endif /* GNUC >= 3.1 */
217# define ATTRIBUTE_FPTR_PRINTF_1 ATTRIBUTE_FPTR_PRINTF(1, 2)
218# define ATTRIBUTE_FPTR_PRINTF_2 ATTRIBUTE_FPTR_PRINTF(2, 3)
219# define ATTRIBUTE_FPTR_PRINTF_3 ATTRIBUTE_FPTR_PRINTF(3, 4)
220# define ATTRIBUTE_FPTR_PRINTF_4 ATTRIBUTE_FPTR_PRINTF(4, 5)
221# define ATTRIBUTE_FPTR_PRINTF_5 ATTRIBUTE_FPTR_PRINTF(5, 6)
222#endif /* ATTRIBUTE_FPTR_PRINTF */
223
224/* Use ATTRIBUTE_NULL_PRINTF when the format specifier may be NULL.  A
225   NULL format specifier was allowed as of gcc 3.3.  */
226#ifndef ATTRIBUTE_NULL_PRINTF
227# if (GCC_VERSION >= 3003)
228#  define ATTRIBUTE_NULL_PRINTF(m, n) __attribute__ ((__format__ (__printf__, m, n)))
229# else
230#  define ATTRIBUTE_NULL_PRINTF(m, n)
231# endif /* GNUC >= 3.3 */
232# define ATTRIBUTE_NULL_PRINTF_1 ATTRIBUTE_NULL_PRINTF(1, 2)
233# define ATTRIBUTE_NULL_PRINTF_2 ATTRIBUTE_NULL_PRINTF(2, 3)
234# define ATTRIBUTE_NULL_PRINTF_3 ATTRIBUTE_NULL_PRINTF(3, 4)
235# define ATTRIBUTE_NULL_PRINTF_4 ATTRIBUTE_NULL_PRINTF(4, 5)
236# define ATTRIBUTE_NULL_PRINTF_5 ATTRIBUTE_NULL_PRINTF(5, 6)
237#endif /* ATTRIBUTE_NULL_PRINTF */
238
239/* Attribute `sentinel' was valid as of gcc 3.5.  */
240#ifndef ATTRIBUTE_SENTINEL
241# if (GCC_VERSION >= 3005)
242#  define ATTRIBUTE_SENTINEL __attribute__ ((__sentinel__))
243# else
244#  define ATTRIBUTE_SENTINEL
245# endif /* GNUC >= 3.5 */
246#endif /* ATTRIBUTE_SENTINEL */
247
248
249#ifndef ATTRIBUTE_ALIGNED_ALIGNOF
250# if (GCC_VERSION >= 3000)
251#  define ATTRIBUTE_ALIGNED_ALIGNOF(m) __attribute__ ((__aligned__ (__alignof__ (m))))
252# else
253#  define ATTRIBUTE_ALIGNED_ALIGNOF(m)
254# endif /* GNUC >= 3.0 */
255#endif /* ATTRIBUTE_ALIGNED_ALIGNOF */
256
257/* Useful for structures whose layout must much some binary specification
258   regardless of the alignment and padding qualities of the compiler.  */
259#ifndef ATTRIBUTE_PACKED
260# define ATTRIBUTE_PACKED __attribute__ ((packed))
261#endif
262
263/* Attribute `hot' and `cold' was valid as of gcc 4.3.  */
264#ifndef ATTRIBUTE_COLD
265# if (GCC_VERSION >= 4003)
266#  define ATTRIBUTE_COLD __attribute__ ((__cold__))
267# else
268#  define ATTRIBUTE_COLD
269# endif /* GNUC >= 4.3 */
270#endif /* ATTRIBUTE_COLD */
271#ifndef ATTRIBUTE_HOT
272# if (GCC_VERSION >= 4003)
273#  define ATTRIBUTE_HOT __attribute__ ((__hot__))
274# else
275#  define ATTRIBUTE_HOT
276# endif /* GNUC >= 4.3 */
277#endif /* ATTRIBUTE_HOT */
278
279/* We use __extension__ in some places to suppress -pedantic warnings
280   about GCC extensions.  This feature didn't work properly before
281   gcc 2.8.  */
282#if GCC_VERSION < 2008
283#define __extension__
284#endif
285
286/* This is used to declare a const variable which should be visible
287   outside of the current compilation unit.  Use it as
288     EXPORTED_CONST int i = 1;
289   This is because the semantics of const are different in C and C++.
290   "extern const" is permitted in C but it looks strange, and gcc
291   warns about it when -Wc++-compat is not used.  */
292#ifdef __cplusplus
293#define EXPORTED_CONST extern const
294#else
295#define EXPORTED_CONST const
296#endif
297
298/* Be conservative and only use enum bitfields with C++ or GCC.
299   FIXME: provide a complete autoconf test for buggy enum bitfields.  */
300
301#ifdef __cplusplus
302#define ENUM_BITFIELD(TYPE) enum TYPE
303#elif (GCC_VERSION > 2000)
304#define ENUM_BITFIELD(TYPE) __extension__ enum TYPE
305#else
306#define ENUM_BITFIELD(TYPE) unsigned int
307#endif
308
309#ifdef __cplusplus
310}
311#endif
312
313#endif  /* ansidecl.h   */
Note: See TracBrowser for help on using the repository browser.